package/postgresql: security bump to version 14.7
Release notes: https://www.postgresql.org/docs/release/14.7/
Fixes: https://security-tracker.debian.org/tracker/CVE-2022-41862
Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>